#include <stdio.h>

int main(int argc, char const *argv[])
{
	int a = 10;
	int *p  ;
	p = &a;
	printf("%p\n",p );

	int b = 20;

	p = &b;

	*p = 200;
	printf("a=%d ,b=%d\n",a,b );


	return 0;
}